Online PHP editor | refs for ke0po

@ 2015-09-26T22:54:07Z

<?php

function addOrIncr(&$arr, $key, $value) {
    $arr[$key] = ($arr[$key] ?? 0) + $value;
}

$arr = ['foo' => 1];
$value = 10;
$key = 'foo';
$arr[$key] = ($arr[$key] ?? 0) + $value;
$key = 'bar';
$arr[$key] = ($arr[$key] ?? 0) + $value;
var_dump($arr);